论文部分内容阅读
铁含量为0.5～0.9％的铝合金已经大量取代了用于建筑电路系统的1350EC合金。因为用后者作的电导体材料有经常发生接触点逐渐松动从而引起过热的毛病。这个问题目前已用新导体合金得到了彻底解决,而且又不降低材料的电导率。本文概述了1985年TMS会议上发表的一篇关于铝合金加工过程中显微组织控制的论文。Al-0.65Fe和类似低成分的Al-Fe合金有比1350EC合金更高的强度和更好的塑性,这是由于热加工亚结构得到了改善。热加工亚结构的改善是通过快速凝固获得了较大密度细小弥散的棒状共晶体实现的。从连续加工的热轧开始就保存下来,一直到线材拉伸和退火处理时基本保持不变的这种亚结构具有特殊的高稳定性,这种高稳定性是直径约0.2μm粒子所强化的结果.
Aluminum alloys with 0.5 to 0.9% iron content have largely replaced 1350EC alloys used in building circuit systems. Because with the latter made of electrical conductor material often have points of contact gradually loosen the cause of overheating problems. This problem has now been completely solved with a new conductor alloy without compromising the electrical conductivity of the material. This article outlines a paper published at the 1985 TMS conference on the control of microstructures in the machining of aluminum alloys. Al-0.65Fe and similarly low-component Al-Fe alloys have higher strength and better ductility than 1350EC alloys due to the thermal substructure improvements. Sub-structure of the hot work to improve the rapid solidification obtained by the small dispersion of the larger density of cocrystal achieved. This sub-structure, which is preserved from the beginning of continuous hot rolling until the wire is stretched and annealed, has a particularly high stability which is enhanced by particles of about 0.2 μm in diameter result.